Merge pull request #284 from SGA-Brookshire/master

cleaning up
Proofreading, mostly superficial changes
Merge branch 'master' of https://github.com/umd-mith/sga
After this, we're almost done checking e2.
Proofreading E3
forget to commit this one file
Merge pull request #285 from alevan2/master

Proofreading, mostly superficial changes
Proofreading e3 and working on some tricky displacements.
Merge pull request #286 from alevan2/master

Proofreading e3 and working on some tricky displacements.
Worked on proof reading, difficult displacements
Coded some displacements in e2, kept proof reading e3.
Almost finished (until David checks) e3.
Merge pull request #287 from alevan2/master

Worked on proof reading, difficult displacements
cleaning up e1